Gage.



H. L; WSUSTN.

` GAGE.

APPHCTIGN HLD HAY 18, 19H3.

2 SHEETS-SHEET '1.

INVENTOR.

` ATTORNEYS vaccurate measurement HEREIIAN L. VI'ITTSTEIN, OF SIIHGEIELL,

anna el.

MASSACHUSETTS.

GAGE.

Application iled May 1S, 191e.

To IZ 1c lio/n it may concern:

Be it known that I, HERMAN L. VITT- srnir, a citizen of the Unitedv States of America, residing at Springfield.I in the county of Hampden and State of Massachusetts, have invented certain new and useful linprovenients iii Gages, ot which the following is a specication.

rl`liis invention relates to gages and incre particularly to that class Ot gages lrnovvn as fixed dimension gages, such as plug, ring, and snap gages as Well as niale and female screw thread gages and the like.

ln the practical use of such lixed dimension gages, -the Workman applies the gage to test. the accuracy of his work. The arti cle tested is frequent-ly taken directly from lie iiiachine in which it was finished and the surface or surfaces to be gaged are apt to be covered with oil, specks of dirt. chips, particles of abrasive substances and the lille, Although gages of the type mentioned are very expensive, since they are precision instruments, which require careful use, it. is very difficult to get the average ivorlnnan to use the wit-li the necessary degree oil care. lrliirticularly. it practically inipossible to insure that each article, prior to test ing, is carefully wiped tree troni foreign substances before. the application of the ygage to that article. ils a consequence, these foreign substances, generally ot an abrasive nature, act dctriiiientallyA on the gage surfaces and cause Wear thereof. The wear 'may be slight iii each instance, but it is rapidly cumulative under repeated applications ofthe gage With the result that the accuracy7 of the gage is soon destroyed and va neivl one made necessar at a inucli earlier period than would have een necessary had the workman used ldue care. Aside from the undesirable Wear on the surfaces of the gage the presence of foreign materialen the article to be gaged also lnterferes'ivith rlhus. a plug gage, when inserted ina'lioleliavnig particles of foreign material"thereinA iniglitcseernto the Workman to t properly whereasftne 4seeinfing tightness 'of the plugin the hole' niiglit in tact be caused by the presence of foreign material. This invention seeks to overcome the dicult-ies set forth.

The object of this invention is to provide inuagage a cleaning device. as a brush, Which-is' so arranged with relation to the Specification of Letters Patent.

latentecl `rlov. 5, gi

Serial No. 235,376.

gage as to combine with the. latter by engaging the surface or surfaces olf the article to be gagcd in advance of the gage itself, vvliereby the article may' be eectively cleaned prior to gaging.

(lt-her objects and advantages ivill appear .i the following description and in the apcnded clainis.

rll'ie invention is disclose in various illus- 'Fernie in the accompanying dra-vw in-wiiici: lligure 'i'. is a 'raginentar37 elevational vieu' cfa plug gage embodying the invention;

Fig. 2 is a somewhat similar view showing the manner of using the gage;

Fig. 3 is. an elevational view of a snap gage embodying the invention;

Fig. f1 an elevational view showing the invention as applied to a inale screw thread gage;

li'g. 5 is an elevational view of a ring with the invention' applied thereto; ig. 6 is a cross sectional vievv takenon tliV line -S-G of Fig. 5;

' is an elevational vievv showing the applied to a female screw and cross sectional vien' taken on of Fig neerring to Fig l c. aplng gage l0 ot usual :torni i "liovcn and this `gage (has an accurately ground cylindrical surface'A ll which is adapted to be inserted in a hole, as l2 in Fig. 2, of an article tobe tested,vas tlie ring a in Fig, 2.A The inventioncon sists in applying to the plug-,l0 a cleaninf device, such as a brush lll, andrfin so locating this device that it inilst enter 0the hole to be gaged in advance of the surface ll.

v The olea-ning device may ce of any suitable material and the material oi" which it is made may obviously .be varied to suit the requirements of the particular work in hand. Thus, for vordinary machined arti cles., tvliere only oil, chips .andthe like are present, .av brush le made up of pig bristles 'maybe used tvliile if the articles have carionized material thereon, suoli as the scale and naines incident to articles which have been pac hardenec1 i brush inade up ot wire bristles may advantageously ce used.

The preferred mounting ci brush ll on the plug gage l0 consists of a stud which is'tlireaded centrally into the plug :is shown 

